Beta Williamson County, TX only — data and coverage are limited during early access.

4516 SANSONE DR, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

4 bed3 bath3,141 sqftBuilt 2013

Property at a Glance

This home is estimated between $608,192 and $1,194,494, with a best estimate of $820,682. That places the property below the R421612B - TERAVISTA GATED median of $984,146, in a neighborhood that appreciated 0.5% over the past year.

Estimated Value Range

$608,192 $1,194,494
Best Estimate
$820,682
WCAD Value
$811,137
Low Confidence

Based on 5 comparable properties(0 in the same subdivision)

There are 5 comparable properties within range, but none are in R421612B - TERAVISTA GATED. The estimated range of $608,192 and $1,194,494 should be treated as a rough guide.

Comparable Properties (5)

4 bed 3 bath 2,470 sqft Built 2013
Raw Value $828,410
Adjusted Value $1,068,050

Adjusted +$239,640 for 671 sqft more living space. Net adjustment: +$239,640.

4 bed 2 bath 2,740 sqft Built 2018
Raw Value $464,980
Adjusted Value $608,192

Adjusted +$143,212 for 401 sqft more living space. Net adjustment: +$143,212.

4 bed 3 bath 2,382 sqft Built 2002
Raw Value $923,426
Adjusted Value $1,194,494

Adjusted +$271,068 for 759 sqft more living space. Net adjustment: +$271,068.

4 bed 4 bath 2,328 sqft Built 2015
Raw Value $459,370
Adjusted Value $749,723

Adjusted +$290,353 for 813 sqft more living space. Net adjustment: +$290,353.

4 bed 3 bath 1,920 sqft Built 2016
Raw Value $384,616
Adjusted Value $820,682

Adjusted +$436,066 for 1,221 sqft more living space. Net adjustment: +$436,066.

The Neighborhood

This home is valued 17.6% below the R421612B - TERAVISTA GATED median of $984,146. That positions it competitively for buyers comparing within the neighborhood. The neighborhood appreciated 0.5% over the past year.

R421612B - TERAVISTA GATED

below average
36 Properties
$984,146 Median Value
+0.5% YoY Change
0% Have Pool
100% Have Garage
This Home
$811,137
Median
$984,146

This home is -17.6% below the subdivision median.

Tax Analysis

The estimated annual property tax is $15,353 across all districts. With a homestead exemption claimed, that drops to $13,953 — saving $1,400 per year. That's $1,163 per month a buyer should budget. The assessed value increased +10.2% vs the subdivision average of +0.5%. This above-average increase gives a protest opportunity score of 79 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$7,244
Williamson CountyCounty0.3694%$2,997
Williamson County MUD #11MUD0.3656%$2,966
Austin Community Collegespecial0.1034%$839
Williamson County ESD #9 - Round RockESD0.0999%$810
Williamson County FM/RdCounty0.0443%$360
Upper Brushy Creek WCIDWater0.0170%$138
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.8928%$15,353
79 / 100

There may be a strong case to protest this appraisal.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $820,682 would pay approximately $5,123 per month (principal and interest only, excluding taxes and insurance).

Data sourced from Williamson County Appraisal District (WCAD), Texas Education Agency (TEA), and Federal Reserve Economic Data (FRED). Assessment values reflect the appraisal district's estimate, not market sale prices. Report generated 4/18/2026.

View full property details